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Proc. Natl. Acad. Sci. USA Vol. 94, pp. 1163311638, October 1997
 

Summary: Proc. Natl. Acad. Sci. USA
Vol. 94, pp. 1163311638, October 1997
Neurobiology
Decoding temporally encoded sensory input by cortical
oscillations and thalamic phase comparators
(neural coding phase-locked loops thalamocortical loops vibrissal touch neuronal oscillations)
EHUD AHISSAR*, SEBASTIAN HAIDARLIU*, AND MIRIAM ZACKSENHOUSE
*Department of Neurobiology, The Weizmann Institute of Science, Rehovot 76100, Israel; and Faculty of Mechanical Engineering, Technion--Israel Institute of
Technology, Haifa 32000, Israel
Edited by Masakazu Konishi, California Institute of Technology, Pasadena, CA, and approved July 28, 1997 (received for review February 14, 1997)
ABSTRACT The temporally encoded information ob-
tained by vibrissal touch could be decoded "passively," in-
volving only input-driven elements, or "actively," utilizing
intrinsically driven oscillators. A previous study suggested
that the trigeminal somatosensory system of rats does not
obey the bottom-up order of activation predicted by passive
decoding. Thus, we have tested whether this system obeys the
predictions of active decoding. We have studied cortical single
units in the somatosensory cortices of anesthetized rats and
guinea pigs and found that about a quarter of them exhibit

  

Source: Ahissar, Ehud - Department of Neurobiology, Weizmann Institute of Science

 

Collections: Biology and Medicine